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3 years ago

Can someone help me with this please !!

Mathematics

2 answers:

pogonyaev3 years ago

7 0

add all amd divide by the 40 ???let me know if im wrong

vaieri [72.5K]3 years ago

7 0

I think Maria is correct I hope that she could have helped you

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Lenny thinks the following expressions are equivalent:

julia-pushkina [17]

Yes, he is correct, using the distributive property you get the same answer

3 0

3 years ago

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This is the picture to follow by. Can you help me with these two questions? I'll mark you brainliest! Thank you!

mihalych1998 [28]

For the first one it’s b and I’m sorry but I’m not sure about the second

8 0

3 years ago

Machine A produces bolts at a uniform rate of 120 every 40 seconds, and Machine B produces bolts at a uniform rate of 100 every

Nutka1998 [239]

Answer:

25 seconds

Step-by-step explanation:

Hi there!

In order to answer this question, first we need to know how many bolts per second are produced by each machine, this can be known by dividing the number of bolts by the time it takes.

For machine A:

$A = \frac{120 bolts}{40 s}= 3 \frac{bolts}{s}$

For machine B:

$B = \frac{100 bolts}{20 s}= 5 \frac{bolts}{s}$

So, if the two machines run simultaneously, we will have a rate of prodcution of bolts equal to the sum of both:

$A+B=(3+5)\frac{bolts}{s}=8\frac{bolts}{s}$

Now, we need to know how much time it will take to producee 200 bolts, to find this out we need to divide the amount of bolts by the production rate:

$t = \frac{bolts}{ProductionRate}= \frac{200 bolts}{8 \frac{bolts}{s} }$

The bolts unit cancell each other and we are left with seconds

$t = \frac{200}{8} s = 25 s$

So it will take 25 seconds to produce 200 bolts with machine A and B running simultaneously.

Greetings!

4 0

3 years ago

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3x - 5y = -16

murzikaleks [220]

X=3 y=5 hope this helped :)

4 0

3 years ago

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Solve for x. - 30 – 5x - 1) + 7 = - 110

ololo11 [35]

Answer:

$x = \frac{86}{5} = 17 \frac{1}{5} = 17.2$

Step-by-step explanation:

$( - 30 - 5x - 1) + 7 = - 110$

$( - 31 - 5x) + 7 = - 110$

$- 31 - 5x + 7 = - 110$

$- 24 - 5x = - 110$

$- 5x = - 110 + 24$

$- 5x = - 86$

$\boxed{\green{x = \frac{86}{5} = 17 \frac{1}{5} = 17.2}}$

5 0

3 years ago